Aircraft systems and instrumentsQuestion 528 of 934

What is indicated airspeed (IAS)?

  1. The airspeed corrected for altitude and temperature
  2. The ASI reading, uncorrected for errors
  3. The airspeed corrected for installation error
  4. The speed over the ground in still air
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Correct answer: The ASI reading, uncorrected for errors

IAS is the direct reading from the ASI, uncorrected for errors. AFM/POH takeoff, landing, and stall speeds are IAS.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 8: Flight Instruments — Airspeed Indicator (ASI), page 210

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Questions last reviewed: 18 October 2026